Little information. White-chinned Swift captures insects in flight, in typical swift fashion. The flight of White-chinned Swift is described as "very fast, direct, and rather bat-like on rapidly beating wings" (Marín and Stiles 1992).
Birds were observed in Costa Rica apparently roosting behind a waterfall, in an area kept wet by spray; these birds clung side by side, almost touching, on a rock wall (Marín and Stiles 1992).
Little information. Marín and Stiles (1992) mention courtship chases by White-chinned Swift, during which the birds fly with rapid, direct flight (no gliding) while giving a "soft, rapid, high-pitched chipping".
Social and interspecific behavior
White-chinned Swift occasionally is encountered as solitary individuals or as pairs, but more commonly is in flocks, often mixed with other species of swift, including various combinations of White-collared Swift (Streptoprocne zonaris), Chestnut-collared Swift (Streptoprocne rutila), and White-chested Swift (Cypseloides lemosi).
Bat Falcon (Falco rufigularis) is documented to prey on White-chinned Swift (Beebe 1950).